Machine for heading bolts and rivets.



M. CHAMPION.

MACHINE FOR HBADING BOLTS AND RIVETS.

APPLICATION FILED JULY 23, 1913.

1,108,659. Patented Ju1y14,1914-,

MATTHEW CHAMPION,

short, it will frequently stick to the end of stock rod with such forcethat both pieces n rTnn s ATEs PATENT OFFICE:

COMPANY,

or CLEVELAND, OHIO, ASSIGNOR To THE CHAMPION RIVET on CLEVELAND, OHIO, ACORPORATION or OHIO.

MACHINE FOR HEADING BOLTS AND RIVE'IS.

Specification of Letters Patent.

Patented My 14, 1914:.

Application filed July 23, 1913. Serial No. 780,663.

To all 107mm it may concern Be it known that I, MATTHEW CHAMPION, acitizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented a certain new. and usefulImprovement in Machines for. Heading Bolts or Rivets, of which thefollowingis a full, clear, and exact description.

This invention is an improvement upon the machine for heading bolts andrivets which is shown and described in the Duncan Patent No. 837,919. Inthe operation of the machine shown in said patent it generally happensthat after there has been sheared from a long stock rod as many fulllength rivet or bolt blanks as possible, there will remain an end ofsaid stock rod which is too short for the making of a bolt or rivet. lVhen the machine operates properly this short end will be pushed forwardout of the way by the front end of the incoming stock rod. If, however,this short end is very the bender plunger or the face of the movabledie, or to both, and will be drawn back into the groove in which thebender plunger moves. When, after this has happened, the front end ofanother stock rod is fed into the machine against the stop gage, and themovable die and the bender plunger begin their operative stroke, thebender plunger will push this short end Over against the new stock rod,and the result is generally very disastrous to the machine. This shortend and the new stock rod are both very hot; and the short end will bepushed against the new will be so distorted that they will be thoroughlywedged in the space in which they lie. Always the machine will bestopped; and frequently something will be broken. In any event, themachine must be disconnected from the power in order that thesedistorted pieces of the stock can be. removed. Generally the pieces ofthe stock will have become cold before they have been removed, so thattheir removal sometimes takes several hours because they have to be dugout.

It is to prevent this not infrequent damage and loss of time that thepresent invention is designed.

The invention is very simple in character and yet it does effectuallyprevent the damage and injury above referred to.

A machine which embodies this invention 1 may be like the machine shownin said Duncan. patent in all respects except that the presentinvention-requires thatthe operative end of the bender plunger shall benarrower than the diameter of the hole in the breast plate through whichthe stock rod is fed to oif' mechanism, be two stripper adjacent to saidare at a distance the action "of the shearing and also that there shallshoulders which are located hole in the breast plate and apart, measuredvertically, which is less than the diameter of said hole in the breastplate, said shoulders being located one above and one below the plunger.Therefore it has not beenthought necessary to show any more of a boltheading machine than those parts thereof in which the present inventionis embodied, and some other adjacent parts.

In the drawing Figure 1 is a sectional plan view in the plane indicatedby line 1-1 on Fig. 2 of so much of a bolt heading machine as hasanything to do with this invention. Fig. 2 is a rear view of the breastplate and of the bender plunger and parts which immediately cooperatewith the bender plunger.

Referring to the parts by letters, It represents the breast plate whichis fiXed to the machine frame a. This breast plate has a hole 72, whichextends horizontally through it from front to rear. It is through thishole that the cylindrical stock rod S is fed periodically against thestop gage a In a recess in the rear face of the breast plate the shearplate z is set. This shear plate forms one-half of the rear end of thehole in the breast plate through which the stock rod is fed. It will beunderstood that after the stock rod has been fed rearward through saidhole until its end engages the stock gage a, then the movable die 0 ismoved to the right, as shown in the drawing, and thereby the projectingend of the stock rod is sheared off between the movable die and theshear plate. The cut off end of the stock is carried over, and is heldembraced between the movable die and the fixed die 6 while the headingdie 0 comes forward to upset the end and finish the rivet or bolt;

erative endfithat is to say; its end which bend the stock rod,

must be narrower, measured than the diameter of the must benarrower-than the diameter of the hole 71- to which the stock rod isfed.

h h represent two stripper shoulders. They are located adjacent to thehole if, one above and one below the operative end of the benderplunger; and the distance be- .tween'them, measured up and down, is lessthan'the diameter of the hole h i In: a machine having the describedconstruction, any small pieceof the stock rod S which may remain in therear endof the hole 7),? and which therefore inight becorne stuckfto'the operative end of thebender plunger we will engage with thesestripper shoulders It? and" will thereby be pulled loose from theplunger and held in the rear end of the hole-72, so that the incomingend 7 M copies of this patent may be obtained toi' 'fiij ene ea eh;b'yad dressing v v n a a i a a. .wg m gfl om cf t stock rod,or, whlch 1ssubstantlally the same thing, t 1

zontal' guide groove of. the new stock rod will push said'short n rea wad ou f h h le 7L2 plate.

in the breast 1 5.

Having described my invention, I claim:

In a machine 'oft e character described, breast plate having thecombination of through it a hole for the passage of the stock'rod andhaving 1n its rear face a horihole, a bender plunger movable: in saiduide roove and two stri er shoulders located adjacent to said hole, oneabove and one below the bender plunger,the distance between saidstripper shoulders being, less than the diameter ofthe said hole in thbreast plate. I V

In testimony whereof, I hereunto aflix my signature in the presence oftwo witnesses. I 1 MATTHEW CHAMPION.

.Witnesses: A. J. Henson,

y L. I. POR ER.

the odmmi ssi ner 5: Patents which intersects said

